2201201221212 has 96 divisors (see below), whose sum is σ = 6561132426240. Its totient is φ = 625148642880.

The previous prime is 2201201221159. The next prime is 2201201221309. The reversal of 2201201221212 is 2121221021022.

It is a happy number.

2201201221212 is a `hidden beast` number, since 220 + 1 + 201 + 221 + 21 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8591239 + ... + 8843742.

It is an arithmetic number, because the mean of its divisors is an integer number (68345129440).

Almost surely, 2^{2201201221212} is an apocalyptic number.

It is an amenable number.

2201201221212 is an abundant number, since it is smaller than the sum of its proper divisors (4359931205028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2201201221212 is a wasteful number, since it uses less digits than its factorization.

2201201221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17435168 (or 17435160 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2201201221212 its reverse (2121221021022), we get a palindrome (4322422242234).

The spelling of 2201201221212 in words is "two trillion, two hundred one billion, two hundred one million, two hundred twenty-one thousand, two hundred twelve".